Piriformis Syndrome: Causes, Symptoms, and Treatment
If you’re suffering from pain in your buttocks that radiates down into your legs and even causes numbness and tingling, you probably immediately think of a herniated disc. But that isn’t always the cause of your problems. In particular, a neuromuscular condition called piriformis syndrome is accompanied by very similar symptoms—which, while resembling those of a herniated disc, have a different origin. In this article, you’ll learn all the key information about causes, symptoms, and treatment options.
Piriformis syndrome occurs when the piriformis muscle (Musculus piriformis) becomes tight due to tension or inflammation, thereby putting pressure on the sciatic nerve. To understand the pain associated with piriformis syndrome, it’s therefore helpful to look at the muscle’s location. The pear-shaped piriformis muscle is part of the inner layer of the hip musculature. It lies beneath the gluteus maximus and runs along the inner side of the pelvis, where it connects the sacrum to the femur.
The piriformis muscle is responsible for externally rotating, extending, and abducting the thigh while standing, as well as stabilizing the hip joint by holding the femoral head in the acetabulum.
Normally, this muscle is very flexible and supple, but it can shorten and stiffen due to accidents, tension, inflammation, overuse, or poor posture. When this happens, it presses on the sciatic nerve, which runs immediately adjacent to it, causing pain, numbness, and tingling. These symptoms are most noticeable during movement and usually subside when lying down.
Note: There are many other anatomical structures surrounding the gluteal muscles, such as the deep gluteal muscles, which can compress the sciatic nerve. For this reason, experts today prefer to use the term “deep gluteal syndrome.” However, since the term “piriformis syndrome” is more commonly used, we will continue to use it in this article.
Piriformis Syndrome: Symptoms
The following symptoms may occur if you have piriformis syndrome:
- Pain in the buttocks, which typically occurs on only one side. In addition to being localized in the buttocks, the pain may also radiate along the course of the sciatic nerve into the back of the thigh.
- Sensory abnormalities such as numbness and tingling in the buttocks or in the thigh, lower leg, and calf, which may extend to the sole of the foot and the toes.
- Worsening of symptoms during movements that engage the gluteal muscles. Examples include jogging, cycling, climbing stairs, lifting, standing, squatting, or sitting on a hard surface.
- Back pain
- Reduced range of motion in the hip joint
Piriformis muscle: The type of pain provides a clue to the cause
We’ve already mentioned some of the symptoms associated with piriformis syndrome above. Pain is a hallmark of this neuromuscular condition.
In addition to pain in the buttocks and leg, piriformis syndrome can alsocause pain in the lumbar spine. Therefore, when establishing a diagnosis, a herniated disc in the lumbar spine—in which aherniated disc presseson the nerve rootat —must always be ruled out.
Since the symptoms of piriformis syndrome cannot be attributed to so-called sciatica caused by disc problems, it is therefore also referred to in orthopedics as pseudo-sciatica. Only a thorough examination can provide clarity so that your doctor can prescribe the right treatment
Piriformis Syndrome: Causes
In addition to past injuries in the buttock area and high-impact sports, prolonged sitting in particular can contribute to the development of piriformis syndrome. This is because during many long days at the office, we remain motionless in the same position in front of the computer for several hours, leading to a very one-sided posture and strain on the body. The piriformis muscle becomes stiff due to this muscular imbalance; the fascia in the gluteal muscles are not sufficiently stretched and become inflexible, leading to tension and counter-tension that exert significant pressure on the surrounding tissue. As a result, the tissue and the sciatic nerve are no longer adequately supplied with oxygen and nutrients, which is one reason for the symptoms described. In addition, metabolic waste products are no longer effectively removed. This can promote inflammatory processes around the piriformis muscle and the sciatic nerve.
The tightened muscle also exerts pressure on the sciatic nerve, as it runs directly alongside the piriformis muscle or, in some people, even through it. The sciatic nerve then simply has too little space, resulting in the symptoms mentioned above.
The pain occurs primarily during movement or when direct pressure is applied, as this further intensifies the irritation of the sciatic nerve. Typical symptoms include not only pain and paresthesia but also the urge to loosen up and shake out the leg. Limping due to restricted hip movement is also possible.
Piriformis Syndrome: Duration
The duration of piriformis syndrome can vary greatly and depends on various factors. These include the individual severity of the condition, the patient’s unique anatomy, any accompanying medical conditions, the type of treatment, and the implementation of therapeutic measures.
In some cases, piriformis syndrome can be acute and last only a short time. In such cases, it can improve in just a few weeks with appropriate measures such as physical therapy, stretching exercises, and anti-inflammatory medications. In other cases, however, the syndrome becomes chronic and persists for several months.
If you experience symptoms suggestive of piriformis syndrome, always consult a specialist. An appropriate diagnosis and treatment are crucial for positively influencing the duration of piriformis syndrome. Doctors, physical therapists, and osteopaths can develop a personalized treatment plan tailored to your specific needs and circumstances.
Piriformis Syndrome: Here’s What Treatment Looks Like
Although the ideal treatment for piriformis syndrome varies from case to case, exercise, relaxation, and stretching are among the most important measures. We’ll introduce you to possible treatment approaches that can help with pain in the buttocks:
- Physical Therapy and Targeted Exercises
Exercises are a key component of treatment for loosening the tight muscle. Functional exercises and strengthening exercises for the muscles surrounding the piriformis muscle can also be helpful. A physical therapist will also show you exercises to improve overall muscle function and posture.
In addition to physical therapy, you can also take matters into your own hands by following BLACKROLL’s program for sciatica pain two to four times a week. It includes stretching exercises, instructions for myofascial self-massage, and exercises for activation and strengthening. To perform all exercises gently and pain-free, we recommend using the BLACKROLL MED foam roller. Because of its lower firmness, you can use it even if you’re generally very sensitive to pain or for therapeutic purposes if you’re already experiencing pain.
Piriformis Stretching: 6 Exercises to Relieve Pain
- Manual Therapy
In addition to targeted exercises, physical therapists and osteopaths use manual techniques such as massage and mobilization to relax the muscles and improve mobility. For example, osteopaths take a holistic approach and can determine whether piriformis syndrome may have developed secondarily due to a functional pelvic misalignment.
- Heat and Cold Therapy
The application of heat (e.g., warm compresses) and cold (e.g., ice packs) can help relieve muscle tension and reduce pain. Try out what works best for you in your situation.
- Anti-Inflammatory Medications and Muscle Relaxants
In cases of inflammation and severe pain, nonsteroidal anti-inflammatory drugs (NSAIDs) can provide relief. These include, for example, the pain relievers ibuprofen or diclofenac. To reduce muscle tension and, consequently, pain, you can also have a short-term prescription for muscle relaxants. Please note that this does not treat the underlying cause and should only be used temporarily—for example, to help you get back to moving.
- Injections
Local injections of anti-inflammatory medications (cortisone combined with a local anesthetic) or muscle-relaxing medications (Botox) directly into the piriformis muscle can specifically reduce pain and inflammation. However, always ask yourself or your healthcare provider why the pain developed in the first place and address the underlying cause to remain pain-free in the long term.
- Shockwave Therapy
Shockwave therapy, or ESWT, is another non-invasive treatment option. In this procedure, the orthopedic surgeon or physical therapist uses a probe that emits high-energy sound waves lasting milliseconds at short intervals. These pulses penetrate the skin, stimulate cells and tissues, increase blood flow, and reduce inflammation. The same principles regarding addressing the underlying cause apply here as with injections and medications.
- Ergonomic adjustments and posture training
To reduce strain on the piriformis muscle and prevent discomfort at its source, you should improve your overall posture and set up your workspace ergonomically. This includes, for example, using a height-adjustable desk and setting the correct seat height. If you spend a lot of time driving, it’s worth optimizing your car seat position and temporarily placing a cushion underneath. Taking regular breaks to move around during long drives also works wonders.
- Weight Management
Being overweight can also put strain on the piriformis muscle. Healthy weight loss can reduce this strain. If you’re unable to change your diet on your own, seek help from a nutritionist.
- Acupuncture
Traditional Chinese medicine is based on the idea that energy produced by every cell flows through the body. If a blockage occurs in the body, this energy can no longer flow. To clear the blockage, acupuncture involves inserting fine needles into specific points on the body, which is also intended to relieve the pain caused by piriformis syndrome.
- Surgical Intervention
Piriformis syndrome should always be treated conservatively first. However, in severe cases where conservative measures are ineffective, surgery may be considered to release the constricting tissue structures and thereby reduce pressure on the sciatic nerve.
Piriformis Syndrome: When Does It Become Chronic?
Do you feel like your piriformis syndrome isn’t going away? Under certain circumstances, piriformis syndrome can indeed become chronic. For example, if the underlying causes—such as muscle tension or injuries—are not effectively addressed at their root, or if the syndrome is not diagnosed in a timely manner. If treatment is delayed, the symptoms may worsen. Additionally, if patients do not follow the prescribed treatment, the condition may persist.
However, every case is different, and piriformis syndrome does not necessarily become chronic right away. If you experience symptoms, always consult a doctor or specialist to receive an accurate diagnosis and appropriate treatment.
Piriformis Syndrome: These Tests Are Used to Diagnose It
If you’ve seen a specialist because of your symptoms, they’ll first ask you about your medical history and your current symptoms. By the way, imaging tests like MRI, X-ray, or ultrasound aren’t performed when piriformis syndrome is suspected. Clinical muscle tests are much more effective for diagnosis, as they allow piriformis syndrome to be distinguished from other conditions with similar symptoms.
Possible tests that can confirm the presence of piriformis syndrome include the Lasegué test, the FAIR test, and the Pace test.
For the Laseguè test, you lie flat on your back. The doctor then takes the leg on the side that hurts and extends it upward at an angle of about 70°. If this movement triggers pain, it may indicate irritation of the sciatic nerve. However, this test can also yield a positive result in cases of a herniated disc.
For the Pace test, sit on an examination table or a chair and let your legs dangle. In this position, the doctor will press down on your knees from the outside with their hand while you spread your legs apart. Does this cause pain? If so, you may have piriformis syndrome.
The FAIR test is also an important and reliable method for diagnosing or ruling out piriformis syndrome. The acronym FAIR stands for the movements that make up the test: flexion (bending), adduction (moving the limb toward the body’s center) ,and internal rotation (turning the limb inward). While the FAIR test cannot provide 100 percent proof that the symptoms are caused by piriformis syndrome, it does offer a very important clue in diagnosing this condition.
To perform the test, patients lie on their unaffected side, with the lower leg straightened and the upper body lying as flat as possible on the examination table. The leg on the painful side isbent at the knee and drawn toward the body. Thehip joint should now be flexed to approximately 60°. At the same time, that same leg is brought toward the body at the hip joint and rotated inward. This stretches the piriformis muscle by pressing the upper leg downward toward the examination table.
The FAIR test is positive if pain occurs in the buttock during the examination.
Conclusion
Piriformis syndrome can occur when the piriformis muscle irritates or compresses the sciatic nerve, or adversely affects metabolic function. The syndrome has various causes, including anatomical variations, inflammation, and muscle tension resulting from overuse or injury. Symptoms can range from pain in the buttocks and lower back to numbness and tingling in the leg.
Diagnosing piriformis syndrome requires a thorough examination by a doctor or therapist, who may use various diagnostic procedures. Treatment options range from physical therapy, stretching, and strengthening exercises to medication and (in rare cases) even surgery.
A timely diagnosis and a treatment strategy tailored to the individual’s symptoms and physical condition are crucial for alleviating symptoms and preventing the condition from becoming chronic. Those affected should therefore always consult an orthopedist, physical therapist, or osteopath if they experience any problems.
